| 释义 |
sustainsustain /səˈsteɪn/ ●○○ W3 AWL verb ETYMOLOGYsustainOrigin: 1200-1300 Old French sustenir, from Latin sustinere to hold up, sustain VERB TABLEsustain |
| Present | I, you, we, they | sustain | | he, she, it | sustains | | Past | I, you, he, she, it, we, they | sustained | | Present perfect | I, you, we, they | have sustained | | he, she, it | has sustained | | Past perfect | I, you, he, she, it, we, they | had sustained | | Future | I, you, he, she, it, we, they | will sustain | | Future perfect | I, you, he, she, it, we, they | will have sustained |
|
| Present | I | am sustaining | | he, she, it | is sustaining | | you, we, they | are sustaining | | Past | I, he, she, it | was sustaining | | you, we, they | were sustaining | | Present perfect | I, you, we, they | have been sustaining | | he, she, it | has been sustaining | | Past perfect | I, you, he, she, it, we, they | had been sustaining | | Future | I, you, he, she, it, we, they | will be sustaining | | Future perfect | I, you, he, she, it, we, they | will have been sustaining |
THESAURUS to keep happening, existing, or doing something without stopping► continue to keep happening, existing, or doing something without stopping: Dry weather will continue through the weekend. It’s important to continue your education. ► keep (on) doing something to continue to do something or to happen, especially in a way that you do not want, like, or expect Keep is a little more informal than continue: The rescue workers kept on working through the night. We thought it was going to get warmer, but it keeps getting colder. ► last to happen for a period of time: The doctors said the infection might last a month. ► go on continue to happen or to do something, especially for a long time: The play seemed to go on for hours. The two women went on talking as if Gayle wasn’t there. ► persevere formal to continue trying to do or practice something difficult: She was tired of climbing, but she knew if she persevered, eventually she would reach the top. ► endure formal if something good endures, it continues for a long time: We’ve had our problems, but our friendship has endured. ► persist formal if something bad persists, it continues. You can also say that a person persists in doing something when this is annoying: The pain persisted, so Manny went to the doctor. I didn’t want to answer her question, but she persisted in asking me. ► maintain formal to make something continue in the same way as before: Though they now live in different cities, they have maintained close family ties. ► sustain formal to make something continue to exist or happen for a long time: It’s unlikely the economy will be able to sustain this level of growth much longer. 1MAKE something CONTINUE [transitive] formal to make something continue over a period of time SYN maintain: Increased construction could help sustain job growth.► see thesaurus at continue2sustain damage/injury/defeat etc. formal to be damaged, hurt, defeated, etc.: The driver sustained a severe head injury.3FOOD/WATER [transitive] to provide enough food, water, etc. for people to stay alive: The land can barely sustain its population.4GIVE STRENGTH [transitive] to make it possible for someone to stay strong or hopeful: The thought of getting home was the only thing that sustained me in the hospital.5WEIGHT [transitive] formal to hold up the weight of something SYN support: The floor cannot sustain the weight of a piano.6IDEA [transitive] formal to support or prove an idea, argument, etc.7(objection) sustained law used by a judge in a court of law to say that someone was right to object to another person’s statement → see also (objection) overruled at overrule (2)[Origin: 1200–1300 Old French sustenir, from Latin sustinere to hold up, sustain] |